Are theswe CDs weird? 2018-09-30 19:51:23 I have a couple of older WinXP computers used only for audio work, one mainly for audio extraction from CD and encoding results to mp3, using two optical drives for reading the CDs.I obtained an audio book (from 2005) and started to process it to get an mp3 version for my Sansa player, which is how I listen to all such material. I have done the same with somewhere between 50 and 100 books on this machine. EAC wasn't seeing the CDs.I then found that Windows Explorer also didn't see them. I tried several different disks from the book. Then I tried some data CDs and they were fine. Then some other audio CDs and they were fine. This particular book's disk just were not even in either of the optical drives, as far as the computer was concerned.I tried another WinXP computer. Same result. The I tried them in my Win7 computer and everything seemed normal. These book CDs appear to be stamped CDs, not CD-R. Is there some way they were made to be invisible to WinXP?